We we took a deep dive for the 3 month update on this call and we found that Tianna did in fact contact Lamar's wife. Tianna revealed to the wife through facebook messenger that Lamar was having an affair with her.
Both the wife and Tianna went back and forth for a couple days, followed by the wife going silent for two weeks. Apparently it took a while for Lamar's wife to process the information. Tianna finally received a call back where the Lamar's wife was asking for more details.
A month after that Tianna was told that they have separated, but Lamar's wife was thinking about giving him one more chance.